BMW 507 Front Suspension Repair - Alfa Romeo Bulletin Board & Forums
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post #1 of 22 (permalink) Old 10-21-2016, 09:24 PM Thread Starter
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BMW 507 Front Suspension Repair

I have a friend who owns a 1958 BMW 507 and has some oil leaking from the front suspension. I remember looking at the car and never saw that type of front suspension. Does anyone know about repairing oil leaks for this car.
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post #2 of 22 (permalink) Old 10-22-2016, 12:18 AM
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There are two main oil seals sealing the king pin. You can take off the whole assembly in one piece out of the car and dismantle it on the work bench. It's fabricated to last for a century if only the seals are ok and oil level is ok.

This piece of manufacturing genius tells you all the truth about both why BMW nearly went bankrupt with the 501/502/507-series all sharing the same construction and that they were coming from aeroplane crafting only some years ago.

Picture shows that per side the whole assy is mounted with 6 bolts only; the cast iron part remains in the car only. I've rebuild last year a full front suspension on a 507 and a 502. You'll need to fabricate some special tools to do the job.
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Last edited by hunttheshunt; 10-22-2016 at 12:21 AM.
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post #3 of 22 (permalink) Old 10-22-2016, 06:36 AM Thread Starter
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I thank you for the king pin information. The seal leaks on the driver's side.
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post #4 of 22 (permalink) Old 10-23-2016, 05:56 PM Thread Starter
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I would like to know where you purchased parts to rebuild the 1958 507 front suspension. I inspected the front suspension and oil is leaking from several different areas and needs new seals. You can send the information to me using a PM.
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post #5 of 22 (permalink) Old 10-23-2016, 11:47 PM
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post #6 of 22 (permalink) Old 11-24-2016, 04:14 PM Thread Starter
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I thank you for the information. I received the seals and will change them in January 2017. This is a photo of the passenger side front suspension and a photo of the engine compartment.
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post #7 of 22 (permalink) Old 09-27-2017, 06:05 PM Thread Starter
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I am finally working on the front suspension and have removed the passenger side. I will remove the driver's side on Friday and begin changing the seals. The suspension appears to be in good condition and have been asked to change the oil pan gaskets and front and real seals. I will also change the pinion seal and rear axle seals. I thank you for your help in finding the parts in Germany. This car was purchased decades ago for $7K.
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post #8 of 22 (permalink) Old 09-30-2017, 06:55 PM Thread Starter
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The driver's side suspension uses the steering box lubrication for the suspension.

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post #9 of 22 (permalink) Old 10-05-2017, 10:47 AM Thread Starter
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I finally removed the front suspension and it took more time because I did not want to break anything.
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post #10 of 22 (permalink) Old 10-19-2017, 03:37 PM Thread Starter
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I am taking the suspension apart and will start to replace the oil seals.
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post #11 of 22 (permalink) Old 10-26-2017, 09:38 PM Thread Starter
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I have finished the passenger side suspension and should finish the driver's side very soon. I know that it has taken alot of time to change the seals and this is always a problem when you have no prior experience. I was surprised that the "A" arm uses large needle bearings instead of bushings.
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post #12 of 22 (permalink) Old 10-27-2017, 04:47 AM
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Quote:
Originally Posted by kuni123456 View Post
I have finished the passenger side suspension and should finish the driver's side very soon. I know that it has taken alot of time to change the seals and this is always a problem when you have no prior experience. I was surprised that the "A" arm uses large needle bearings instead of bushings.
That's what i've prepared you to expect. Extremely detailed construction.
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post #13 of 22 (permalink) Old 11-14-2017, 09:12 PM Thread Starter
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I have to press off the king pin on Thursday and then replace all of the old seals. I should be finished next week and then can replace the front suspension. I am going to replace the front and rear engine seals and then the pinion seal and rear axle seals. I believe that the distributor needs a new advance curve and new advance springs. I can say that this car is very different any car that I have repaired up to now.
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post #14 of 22 (permalink) Old 12-18-2017, 09:32 PM Thread Starter
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I finally pressed off the king pin and should start to install the suspension probably next week because I will be busy with the holidays.
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post #15 of 22 (permalink) Old 12-27-2017, 11:42 AM Thread Starter
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I am almost finished changing the seals and will start to install the suspension. I had to make some special tools and use my friend's machine shop.
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